diff --git a/.github/workflows/manually_build_for_testing.yml b/.github/workflows/manually_build_for_testing.yml
index 8dc82b86..b7d93230 100644
--- a/.github/workflows/manually_build_for_testing.yml
+++ b/.github/workflows/manually_build_for_testing.yml
@@ -474,6 +474,7 @@ jobs:
           export image_customer=${image}-customer
           pwd
           docker build \
+            --no-cache=true \
             --build-arg http_proxy=${HTTP_PROXY} \
             --build-arg https_proxy=${HTTPS_PROXY} \
             --build-arg HTTP_PROXY_HOST=${HTTP_PROXY_HOST_2} \